Emerald-cut gem

Step 1 of 3 · add 5 tiles
Lay the middle row
Lay a straight row of five squares across the middle.
Open this build in the play room
The trick
Swap each corner square for a triangle pointing inward; the triangle's slope trims the sharp corner to the flat bevel a real emerald cut has.
What you will need
- 11 square tiles
- 4 right-angle triangle tiles
Step by step
1. Lay the middle row
Lay a straight row of five squares across the middle.
2. Build the block
Add three squares along the top and three along the bottom to fill out the rectangle.
3. Bevel the corners
Put one triangle in each corner, sloped edge facing out, to cut the four bevels.
This build works with any standard-footprint tile, so the brand you own matters less than the count. Short on tiles for it? The first-pack guide covers how to grow a collection without overpaying, the brand ranking covers which sets hold a build this size, and the compatibility guide covers mixing a cheap set into one you already have.